ethyl (2Z)-2-chloro-2-[2-(5-chloro-2-methoxyphenyl)hydrazin-1-ylidene]acetate

1-(2-chloro-5-nitrophenyl)-3-(ethoxycarbonyl)-4,5-dihydro-1H-pyrazole-5-carboxylic acid

1-(2,5-dichlorophenyl)-3-(ethoxycarbonyl)-4,5-dihydro-1H-pyrazole-5-carboxylic acid

3-(ethoxycarbonyl)-1-(2-methyl-5-nitrophenyl)-4,5-dihydro-1H-pyrazole-5-carboxylic acid

3-(ethoxycarbonyl)-1-(4-phenoxyphenyl)-4,5-dihydro-1H-pyrazole-5-carboxylic acid

3-(ethoxycarbonyl)-5-methyl-1-(2-methylphenyl)-4,5-dihydro-1H-pyrazole-5-carboxylic acid

1-(3,5-dimethylphenyl)-3-(ethoxycarbonyl)-5-methyl-4,5-dihydro-1H-pyrazole-5-carboxylic acid

3-(ethoxycarbonyl)-1-(2-ethylphenyl)-5-methyl-4,5-dihydro-1H-pyrazole-5-carboxylic acid

3-(ethoxycarbonyl)-1-(4-methoxyphenyl)-5-methyl-4,5-dihydro-1H-pyrazole-5-carboxylic acid

3-(ethoxycarbonyl)-5-methyl-1-(4-phenoxyphenyl)-4,5-dihydro-1H-pyrazole-5-carboxylic acid

3-(ethoxycarbonyl)-5-methyl-1-(2-methyl-4-nitrophenyl)-4,5-dihydro-1H-pyrazole-5-carboxylic acid